a7aab42915
Addressing comments, fixing style issues Change-Id: I91b72ab5cdf80d68476858f442616ab3af41e709
29 lines
1.3 KiB
C
29 lines
1.3 KiB
C
/*
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* Copyright (c) 2015 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be
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* found in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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/*
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Top level interface for computing optical flow. This function
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takes in two images and returns the pixelwise motion field that
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describes the motion between the two images. n_levels corresponds
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to the number of levels of an image pyramid to use for coarse to fine
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refinement. If no coarse to fine refinement is desired, this should be
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set to 1.
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Note that the warping needs to be done by SUBTRACTING the flow vectors
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from the locations in the second image passed in (ref) in order to produce
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a prediction for the first image passed in (frm).
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To compute the motion vectors for a single pixel, see the function
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optical_flow_per_pixel in vp9_opticalflow.c.
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*/
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void compute_flow(unsigned char *frm, unsigned char *ref,
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double *u, double *v, double *confidence, int width,
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int height, int frm_stride, int ref_stride, int n_levels);
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